Android连接wifi代码

• 权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>

• 功能函数

    public void connectWifi(String targetSsid, String targetPsd, String enc) {
        // 1、注意热点和密码均包含引号，此处需要需要转义引号
        String ssid = "\"" + targetSsid + "\"";
        String psd = "\"" + targetPsd + "\"";

        //2、配置wifi信息
        WifiConfiguration conf = new WifiConfiguration();
        conf.SSID = ssid;
        switch (enc) {
            case "WEP":
                // 加密类型为WEP
                conf.wepKeys[0] = psd;
                conf.wepTxKeyIndex = 0;
                conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
                break;
            case "WPA":
                // 加密类型为WPA
                conf.preSharedKey = psd;
                break;
            case "OPEN":
                //开放网络
                conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        }
        //3、链接wifi

        WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
        wifiManager.addNetwork(conf);
        List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
        for (WifiConfiguration i : list) {
            if (i.SSID != null && i.SSID.equals(ssid)) {
                wifiManager.disconnect();
                wifiManager.enableNetwork(i.networkId, true);
                wifiManager.reconnect();
                break;
            }
        }
    }

注：代码来自网络